BSP752R(2004) Просмотр технического описания (PDF) - Infineon Technologies
Номер в каталоге
Компоненты Описание
производитель
BSP752R Datasheet PDF : 17 Pages
| |||
Open-load detection
OFF-state diagnostic condition:
VOUT > 3V typ.; IN=low
OFF
Logic
unit
Open load
detection
R EXT
V OUT
RO
Signal GND
GND disconnect
Vbb VIN VST
IN
Vbb
PROFET OUT
ST
GND
VGND
GND disconnect with GND pull up
IN
Vbb
PROFET OUT
ST
GND
Vbb
VIN VST
VGND
BSP 752 R
Vbb disconnect with charged inductive
load
high
IN
Vbb
PROFET OUT
ST
GND
Vbb
Inductive Load switch-off energy
dissipation
E bb
=
E AS
IN
Vbb
PROFET OUT
ST
GND
L
{ZL
RL
ELoad
EL
ER
Energy stored in load inductance: EL = ½ * L * IL2
While demagnetizing load inductance,
the enérgy dissipated in PROFET is
EAS = Ebb + EL - ER = VON(CL) * iL(t) dt,
with an approximate solution for RL > 0Ω:
IL * L
IL * RL
EAS =
2*
RL
* (V bb + | V O U T ( C L )| ) * ln (1 +
)
| V OUT (CL )|
Page 9
2004-01-27
Share Link: 